Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 40 for “"Host-guest interactions"”.
-
The Chemistry of Fullerenes, Polymers, and Host/Guest Interactions
… of fullerenes, investigation of host/guest interactions in solution, and the synthesis and characterization of ion containing polymers. The separation and functionalization of fullerenes is a recent and exciting area of research. The separation methods outlined are intended to …
-
OCTAHEDRAL METAL CLUSTERS AS MOLECULAR BUILDING BLOCKS OF COORDINATION POLYMERS: SYNTHESIS, CHARACTERIZATION, AND STUDY OF THEIR HOST-GUEST INTERACTIONS
This dissertation work focuses on the use of cyanide-functionalized paramagnetic cluster [(Ta6Cl12i)(CN)12a]3- with valence electron per cluster (VEC) = 15 as molecular building blocks of coordination polymers. Apical cyanide ligands are used as bridging ligands between the cluster and other …
-
'Amplifying' the NMR signatures of host-guest interactions and molecular structure using liquid-crystalline matrices and polarization enhancement of nuclear spins
… to investigate the structure and dynamics of host-guest systems. NMR spectroscopy has gained attention because of its high spectral information content for studies of molecules in the solid state and in solution. However, the main weakness of NMR is the inherent low detection sensitivity. …
-
New sensor applications of poly(phenylene ethynylene)s
… analytes was shown to be assisted by specific host-guest interactions involving the calix[4]arene macrocycles.
-
SPECTROSCOPIC STUDIES OF NUCLEAR SPINS POLARIZED VIA SPIN EXCHANGE OPTICAL PUMPING AND DYNAMIC COUPLING IN CRYPTOPHANE HOST-GUEST COMPLEXES
… to enhance NMR sensitivity and/or measure weak interactions. The potential use of these tools to study host-guest interactions is of particular interest. In certain systems the sensitivity problem of conventional NMR/MRI can be overcome by applying optical pumping (OP) methods to enhance nuclear …
-
The physio-chemical properties of organic inclusion compounds
In this thesis the inclusion properties of the host compounds trans-9,10-dihydroxy-9,10-bis(p-tert-butylphenyl)-9, 10-dihydroanthracene (TBDDDA), 9.9'-(Biphenyl-4,4'diyl) difluoren-9-ol (WEB24) and 1â ´ ,1â ¶,5â ´,5â ¶-tetrahydroxy-2,4,6,8-tetrapentyl-3â ´,3â ¶,7â ´,7â …
-
MULTIVARIATE FLEXIBLE METAL ORGANIC FRAMEWORKS: THE ROLE OF FUNCTIONALIZED LINKERS, HETEROGENEITY AND DEFECTS IN ADSORPTION PROCESSES
… or reaction of a wide selection of molecular guests, making them useful for applications in selective gas adsorption/separation. Furthermore, a number of MOFs have the ability to respond to specific stimuli such as host-guest interactions, temperature or pressure change, light, etc. To date, …
-
Cucurbit[n]uril-based colloidal self-assembly in hybrid polymeric systems
Supramolecular interactions are of great importance in the fabrication of new functional materials. In particular, colloidal assembly via supramolecular pathway has contributed to numerous innovations in material chemistry, on account of its specific, directional and dynamic non-covalent …
-
Characterization and Synthesis of Cyclodextrin Inclusion Complexes and their Applications as Fluorescent Probes for Sensing Biomacromolecules
… cavity that allows them to form stable host-guest complexes with lipophilic molecules. This combination of functionality and guest binding ability makes CDs important scaffolds for the design of functional supramolecular systems. This thesis explored the interaction of …
-
Design and Assembly of Block Copolymer-Modified Nanoparticles into Supracolloidal, Molecular Mimics
… for increased control in directing particle interactions. This control is necessary to continue furthering the advancement of gold nanoparticles in plasmonics, sensors, and catalysts. Here, we introduce two strategies to assemble gold nanoparticles into supracolloidal nanostructures. Gold …
-
Exploring Pressure-Induced Structural Changes and CO2 Adsorption in Flexible Metal-Organic Frameworks
… structural changes of flexible MOFs and their host–guest interactions with CO₂ under high pressure, investigated using in situ X-ray diffraction (XRD) and vibrational spectroscopy. The synergistic effect of high pressure and high temperature on CO2 adsorption in the MOFs was also investigated. …
-
Characterization of Cucurbituril Complex Ions in the Gas Phase Using Electrospray Ionization Fourier Transform Ion Cyclotron Resonance Mass Spectrometry
<p>Host-guest interactions have been well studied in the new century to obtain fundamental insights into supramolecular chemistry. Most of the pioneering works have been done using techniques such as NMR, X-ray crystallography, IR spectroscopy and so on. However, none of these techniques is …
-
Inclusion compounds of multipedal hosts
The inclusion properties of three multipedal host compounds have been investigated. The host compounds : hexakis(3-hydroxy-3,3-diphenyl-2-propynyl)benzene (host 1), 1,2,3,5,6, 7-hexakis(3-hydroxy-3,3-diphenyl-2-propynyl)naphthalene (host 2), and tetra(3-hydroxy-3,3-diphenyl-2-propynyl)ethylene …
-
Calculating Magnetic Properties of Materials Using Density Functional Theory
… can complement the information about host-guest interactions gained from other experimental techniques, as well as provide useful guidance for interpreting experimental NMR results. Finally, preliminary work has been done for extending the van der Waals density functional to include …
-
Clathration by diol hosts : thermodynamics and structure
Inclusion properties of the following seven diol host compounds were investigated: Host 1 9,9'-bis(9,91-dihydroxy-fluorene) Host 2 1, 1'-binaphthyl-2,2'-bis( diphenylhydroxymethyl) Host 3 2,2'-bis(9-hydroxy-9-fluorenyl)biphenyl Host 4 trans-9, 10-dihydroxy-9,10-diphenyl-9, 10-dihydroanthracene Host …
-
A study of secondary bonding effects in Werner clathrates
… (V) have been elucidated. The diiodomethane guest molecules in STRUCTURE III were severely disordered at room temperature and so this structure was solved at -40°C. The dichloromethane clathrate is isomorphous with the chloroform clathrate of the same host, and both these clathrates have a …
-
The enclathration of alcohols by cholic acid
… studied with a view to understanding the role of guest molecules in inducing and stabilizing a particular Cholic acid (host) lattice structure. Alcohols in the series CH₃(CH₂nOH (n= 0 to 3 and 2-propanol) were employed as guest molecules and enclathrated in the host lattice of Cholic acid during …
-
Nuevas sondas cromo-flurogénicas a partir de derivados organopaladio y compuestos indénicos
… from the point of basic research, they study the host-guest interactions, mediated by a dyestuff, oriented to the signalling of coordination processes; second, the applications of these systems is intended to the development of detection systems for selected interesting analytes from simple colour …
-
Structure and Ionic Conductivity Properties of Ionic Liquid@Metal—Organic Framework Composites
… chemical stability of the ionic liquid with the host-guest interactions of the MOF. Although there is a large degree of chemical tunability of the MOF and IL components, the ionic conductivity of the IL in the composite is greatly reduced compared to the bulk due to the nanoconfinement of the IL …
Page 1 of 2